CVE-2023-3268 — An out of bounds (OOB) memory access flaw was found in the Linux kernel in relay
An out of bounds (OOB) memory access flaw was found in the Linux kernel in relay_file_read_start_pos in kernel/relay.c in the relayfs. This flaw could allow a local attacker to crash the system or leak kernel internal information.
Published
2023-06-16T00:00:00.000Z
Last modified
2025-03-11T14:53:35.403Z
01What is this vulnerability?
An out of bounds (OOB) memory access flaw was found in the Linux kernel in relay_file_read_start_pos in kernel/relay.c in the relayfs. This flaw could allow a local attacker to crash the system or leak kernel internal information.
02Affected products
| Vendor | Product | Versions |
|---|
| n | a / Kernel | Kernel version prior to 6.4-rc1 |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:
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07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2023-06-16T00:00:00.000Z
- Last modified: 2025-03-11T14:53:35.403Z
09References
- lore.kernel.org — https://lore.kernel.org/lkml/1682238502-1892-1-git-send-email-yangpc%40wangsu.co…
- cdn.kernel.org — https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.2
- www.debian.org — https://www.debian.org/security/2023/dsa-5448
- lists.debian.org — https://lists.debian.org/debian-lts-announce/2023/07/msg00030.html
- git.kernel.org — https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=43…
- www.debian.org — https://www.debian.org/security/2023/dsa-5480
- security.netapp.com — https://security.netapp.com/advisory/ntap-20230824-0006/
- lists.debian.org — https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
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